[asterisk-bugs] [JIRA] (ASTERISK-30051) No video after un-hold

[Maximilian Fridrich (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-30051?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Maximilian Fridrich updated ASTERISK-30051:
-------------------------------------------

    Attachment: unhold_video_bug_sip.pcapng

> No video after un-hold
> ----------------------
>
>                 Key: ASTERISK-30051
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-30051
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_pjsip
>    Affects Versions: 16.16.0, 18.11.1, 19.3.3
>         Environment: Linux 5.13.0, 20.04.1-Ubuntu, x86_64
>            Reporter: Maximilian Fridrich
>         Attachments: unhold_video_bug_sip.pcapng
>
>
> During a call with audio and video, when one participant holds the call and then un-holds, the participant that initiated the hold sees no video.
> The issue occurs only when moh_passthrough=yes is set in pjsip.conf.
> It occurs most of the time, however sometimes randomly there is video as expected. Furthermore, when Asterisk is built with the DEBUG_THREADS option, the issue does not occur at all.
> The attached trace shows the un-hold re-INVITE of the UA (packet no. 31) with sendrecv/sendrecv, Asterisk sending sendonly/sendonly to the second call leg (no. 33), then sending another re-INVITE to the second call leg with sendrecv/sendonly (no. 36) . So Asterisk is ultimately setting the video stream of the second call sendonly from its perspective, which is why the UA of the first leg does not receive video.
> The dialplan only executes Dial(PJSIP/endpoint).



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